from datetime import datetime, timedelta
from time import localtime

from flask import abort
from flask import current_app
from flask import g
from flask import redirect
from flask import render_template, jsonify
from flask import request
from flask import session
from flask import url_for

from info import constants, db
from info.models import User, News, Category
from info.modules.admin import admin_blue
from info.utils.common import get_login_info
from info.utils.image_storage import storage
from info.utils.response_code import RET


@admin_blue.route("/")
@get_login_info
def admin_index():
    user = g.user
    data = {
        'user': user
    }
    return render_template('admin/index.html', data=data)


@admin_blue.route("/login", methods=["GET", "POST"])
@get_login_info
def admin_login():
    if request.method == 'GET':
        username = session.get('nick_name')
        is_admin = session.get('is_admin')
        if username and is_admin:
            return redirect(url_for('admin.admin_index'))
        return render_template('admin/login.html')

    user_name = request.form.get('username')
    pass_word = request.form.get("password")
    if not all([user_name, pass_word]):
        return jsonify(errno=RET.PARAMERR, errmsg='参数不全')
    try:
        user = User.query.filter(User.mobile == user_name).first()

    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg="数据查询失败")

    if not user:
        return render_template('admin/login.html', errmsg="用户不存在")

    if not user.check_passowrd(pass_word):
        return render_template('admin/login.html', errmsg="密码错误")

    if not user.is_admin:
        return render_template('admin/login.html', errmsg="用户权限错误")
    session["user_id"] = user.id
    session["nick_name"] = user.nick_name
    session["mobile"] = user.mobile
    session["is_admin"] = True

    return redirect(url_for('admin.admin_index'))


@admin_blue.route('/user_count')
def user_count():
    # 查询总人数
    # 查询总人数
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询月新增数
    mon_count = 0
    now = localtime()
    try:
        mon_begin = '%d-%02d-01' % (now.tm_year, now.tm_mon)
        mon_begin_date = datetime.strptime(mon_begin, '%Y-%m-%d')
        mon_count = User.query.filter(User.is_admin == False, User.create_time >= mon_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询日新增数
    day_count = 0
    try:
        day_begin = '%d-%02d-%02d' % (now.tm_year, now.tm_mon, now.tm_mday)
        day_begin_date = datetime.strptime(day_begin, '%Y-%m-%d')
        day_count = User.query.filter(User.is_admin == False, User.create_time > day_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询图表信息
    # 获取到当天00:00:00时间

    now_date = datetime.strptime(datetime.now().strftime('%Y-%m-%d'), '%Y-%m-%d')
    # 定义空数组，保存数据
    active_date = []
    active_count = []

    # 依次添加数据，再反转
    for i in range(0, 31):
        begin_date = now_date - timedelta(days=i)
        end_date = now_date - timedelta(days=(i - 1))
        active_date.append(begin_date.strftime('%Y-%m-%d'))
        count = 0
        try:
            count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,
                                      User.last_login < end_date).count()
        except Exception as e:
            current_app.logger.error(e)
        active_count.append(count)

    active_date.reverse()
    active_count.reverse()

    data = {"total_count": total_count, "mon_count": mon_count, "day_count": day_count, "active_date": active_date,
            "active_count": active_count}

    return render_template('admin/user_count.html', data=data)


@admin_blue.route("/user_list")
@get_login_info
def user_list():
    """查询用户列表"""
    users = []
    p = request.args.get("p", 1)
    try:
        p = int(p)
    except Exception as e:
        current_app.logger.error(e)
        p = 1
    user_list = []
    current_page = 1
    total_page = 1
    try:
        paginate = User.query.filter(User.is_admin == False).paginate(p, 10, False)
        users = paginate.items
        # 获取当前页
        current_page = paginate.page
        # 获取总页数
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)
        print('查询数据库失败')
        abort('404')

    for user in users:
        user_list.append(user.to_dict())
    data = {
        'user_list': user_list,
        "total_page": total_page,
        "current_page": current_page
    }

    return render_template('admin/user_list.html', data=data)


@admin_blue.route('/news_review')
def news_review():
    """返回待审核新闻列表"""

    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1
    filters = [News.status != 0]
    if filters:
        filters.append(News.title.contains(keywords))
        try:
            paginate = News.query.filter(*filters) \
                .order_by(News.create_time.desc()) \
                .paginate(page, 2, False)

            news_list = paginate.items
            current_page = paginate.page
            total_page = paginate.pages
        except Exception as e:
            current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_review_dict())

    data = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}

    return render_template('admin/news_review.html', data=data)


@admin_blue.route('/news_review_detail')
def news_review_detail():
    news_id = request.args.get("news_id")
    if not news_id:
        return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

    # 通过id查询新闻
    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)

    if not news:
        return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

    # 返回数据
    news = news
    return render_template('admin/news_review_detail.html', news=news)


@admin_blue.route('/news_edit')
def news_edit():
    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1
    filters = [News.status == 0]
    if filters:
        filters.append(News.title.contains(keywords))
        try:
            paginate = News.query.filter(*filters) \
                .order_by(News.id.asc()) \
                .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

            news_list = paginate.items
            current_page = paginate.page
            total_page = paginate.pages
        except Exception as e:
            current_app.logger.error(e)
    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_review_dict())

    data = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}

    return render_template('admin/news_edit.html', data=data)


@admin_blue.route('/news_edit_detail', methods=['GET', 'POST'])
def news_edit_detail():
    """新闻编辑详情"""
    # 获取参数
    if request.method == 'GET':
        news_id = request.args.get("news_id")

        if not news_id:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})

        # 查询新闻
        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})

        # 查询分类的数据
        categories = Category.query.all()
        categories_list = []
        for category in categories:
            c_dict = category.to_dict()
            c_dict["is_selected"] = False
            if category.id == news.category_id:
                c_dict["is_selected"] = True
            categories_list.append(c_dict)
            categories_list.append(category.to_dict())
        # 移除`最新`分类
        categories_list.pop(0)

        data = {"news": news, "categories": categories_list}
        return render_template('/admin/news_edit_detail.html', data=data)
    news_id = request.form.get("news_id")
    title = request.form.get("title")
    digest = request.form.get("digest")
    content = request.form.get("content")
    index_image = request.files.get("index_image")
    category_id = request.form.get("category_id")
    # 1.1 判断数据是否有值
    if not all([title, digest, content, category_id]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到新闻数据")

    # 1.2 尝试读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

        # 2. 将标题图片上传到七牛
        try:
            key = storage(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")
        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key
    # 3. 设置相关数据
    news.title = title
    news.digest = digest
    news.content = content
    news.category_id = category_id

    # 4. 保存到数据库
    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="保存数据失败")
    # 5. 返回结果
    return jsonify(errno=RET.OK, errmsg="编辑成功")
